Improvements in or connected with vacuum cleaner installations,申请号GB19310020405-传众专利搜索

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发明名称	Improvements in or connected with vacuum cleaner installations
摘要
申请公布号	GB381622(A)	申请公布日期	1932.10.13
申请号	GB19310020405	申请日期	1931.07.16
申请人	FREDERICK AUBREY NORRIS	发明人
分类号	A47L9/24	主分类号	A47L9/24
代理机构		代理人
主权项
地址

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